Journal Article

PUBDB-2022-01289

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Fragmentation dynamics of fluorene explored using ultrafast XUV-Vis pump-probe spectroscopy

Garg, D.DESY* ; Lee, J. W. L. (First author)Extern*DESY* ; Tikhonov, D. (First author)DESY* ; Chopra, P.DESY* ; Steber, A.CFEL*MPG*DESY* ; Lemmens, A.Extern* ; Erk, B.XFEL.EU*DESY* ; Allum, F.Extern* ; Boll, R.XFEL.EU* ; Cheng, X.CFEL* ; Duesterer, S.XFEL.EU*DESY* ; Gruet, S. P. ; He, L.CFEL*Extern*XFEL.EU* ; Heathcote, D.Extern* ; Johny, M.CFEL*Extern*XFEL.EU* ; Mohammad Kazemi, M.DESY* ; Koeckert, H.Extern* ; Lahl, J.Extern* ; Loru, D.Extern*DESY* ; Maclot, S.Extern* ; Mason, R.Extern* ; Mueller, E.Extern* ; Mullins, T.XFEL.EU*DESY* ; Olshin, P.Extern* ; Passow, C.XFEL.EU*DESY* ; Peschel, J.Extern*XFEL.EU* ; Ramm, D.DESY* ; Rompotis, D.XFEL.EU* ; Trippel, S.CFEL*XFEL.EU*DESY* ; Wiese, J.CFEL*Extern*XFEL.EU* ; Ziaee, F.Extern* ; Bari, S.DESY* ; Burt, M.Extern* ; Küpper, J.CFEL*XFEL.EU*DESY* ; Rijs, A.CFEL*Extern* ; Rolles, D.Extern* ; Techert, S.XFEL.EU*DESY* ; Eng-Johnsson, P.Extern*XFEL.EU* ; Brouard, M.Extern*XFEL.EU* ; Vallance, C.Extern*XFEL.EU* ; Manschwetus, B.DESY* ; Schnell, M. (Corresponding author)CFEL*DESY*

2022
Frontiers Media Lausanne

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Please use a persistent id in citations: doi:10.3389/fphy.2022.880793  doi:10.3204/PUBDB-2022-01289

Abstract: We report on the use of extreme ultraviolet (XUV, 30.3 nm) radiation from the Free-electron LASer in Hamburg (FLASH) and visible (Vis, 405 nm) photons from an optical laser to investigate the relaxation and fragmentation dynamics of fluorene ions. The ultrashort laser pulses allow to resolve the molecular processes occurring on the femtosecond timescales. Fluorene is a prototypical small polycyclic aromatic hydrocarbon (PAH). Through their infrared emission signature, PAHs have been shown to be ubiquitous in the universe, and they are assumed to play an important role in the chemistry of the interstellar medium. Our experiments track the ionization and dissociative ionization products of fluorene through time-of-flight mass spectrometry and velocity-map imaging. Multiple processes involved in the formation of each of the fragment ions are disentangled through analysis of the ion images. The relaxation lifetimes of the excited fluorene monocation and dication obtained through the fragment formation channels are reported to be in the range of a few tens of femtoseconds to a few picoseconds.

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Contributing Institute(s):

1. Spectroscopy of molecular processes (FS-SMP)
2. Strukturdynamik Chemischer Systeme (FS-SCS)
3. CFEL-CMI (FS-CFEL-CMI)
4. beauftragt von UNI (UNI/CUI)
5. Uni Hamburg / Experimentalphysik (UNI/EXP)
6. FLASH Wissenschaftlicher Nutzerbetrieb (FS-FLASH-O)

Research Program(s):

1. 631 - Matter – Dynamics, Mechanisms and Control (POF4-631) (POF4-631)
2. 6G2 - FLASH (DESY) (POF4-6G2) (POF4-6G2)
3. FS-Proposal: F-20170540 (F-20170540) (F-20170540)
4. DFG project 390715994 - EXC 2056: CUI: Advanced Imaging of Matter (390715994) (390715994)
5. DFG project 194651731 - EXC 1074: Hamburger Zentrum für ultraschnelle Beobachtung (CUI): Struktur, Dynamik und Kontrolle von Materie auf atomarer Skala (194651731) (194651731)
6. HIRS-0018 - Helmholtz-Lund International School - Intelligent instrumentation for exploring matter at different time and length scales (HELIOS) (2020_HIRS-0018) (2020_HIRS-0018)

Experiment(s):

1. FLASH Beamline BL1 (FLASH)

Appears in the scientific report 2022

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Database coverage:
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